0024192: Adding support for shaders to OCCT visualization toolkit

src/Graphic3d/FILES

@@ -31,6 +31,17 @@ Graphic3d_Group_2.cxx
 Graphic3d_Group_8.cxx
 Graphic3d_Group_10.cxx
 Graphic3d_Structure.pxx
+Graphic3d_ShaderObject.hxx
+Graphic3d_ShaderObject.cxx
+Graphic3d_ShaderProgram.hxx
+Graphic3d_ShaderProgram.cxx
+Graphic3d_ShaderVariable.hxx
+Graphic3d_ShaderVariable.cxx
+Graphic3d_ShaderVariable.lxx
+Graphic3d_ShaderObject_Handle.hxx
+Graphic3d_ShaderProgram_Handle.hxx
+Graphic3d_ShaderVariable_Handle.hxx
+Graphic3d_TypeOfShaderObject.hxx
 Graphic3d_DataStructure.pxx
 Graphic3d_StructureManager.pxx
 Graphic3d.edl
@@ -57,4 +68,4 @@ Graphic3d_ClipPlane.hxx
 Graphic3d_ClipPlane.cxx
 Graphic3d_ClipPlane_Handle.hxx
 Graphic3d_SetOfHClipPlane.hxx
-Graphic3d_SetOfHClipPlane_Handle.hxx
+Graphic3d_SetOfHClipPlane_Handle.hxx

src/Graphic3d/Graphic3d.cdl

@@ -584,6 +584,9 @@ is
     imported NListOfHAsciiString;
     ---Category: Instantiated classes
 
+    imported ShaderProgram_Handle;
+    ---Category: Instantiated classes
+
     imported SetOfHClipPlane;
     ---Category: Instantiated classes
     -- Set of handles on clip planes

src/Graphic3d/Graphic3d_AspectFillArea3d.cdl

@@ -42,14 +42,16 @@ class AspectFillArea3d from Graphic3d inherits AspectFillArea from Aspect
 
 uses
 
-        Color           from Quantity,
-        Ratio           from Quantity,
+        Color                 from Quantity,
+        Ratio                 from Quantity,
 
-        TypeOfLine      from Aspect,    
-        InteriorStyle   from Aspect,
+        TypeOfLine            from Aspect,    
+        InteriorStyle         from Aspect,
 
-        MaterialAspect  from Graphic3d,
-        TextureMap      from Graphic3d
+        MaterialAspect        from Graphic3d,
+        TextureMap            from Graphic3d,
+
+        ShaderProgram_Handle  from Graphic3d
 
 is
 
@@ -189,6 +191,12 @@ is
         --          Consult OpenGL reference for details (glPolygonOffset function description).
         ---Category: Methods to modify the class definition
 
+        SetShaderProgram ( me  :  mutable; 
+                           theProgram  :  ShaderProgram_Handle from Graphic3d );
+        ---Level: Public
+        ---Purpose: Sets up OpenGL/GLSL shader program.
+        ---Category: Methods to modify the class definition
+
         ----------------------------
         -- Category: Inquire methods
         ----------------------------
@@ -244,9 +252,12 @@ is
                          aUnits  : out ShortReal from Standard );
         ---Level: Public
         ---Purpose: Returns current polygon offsets settings.
-        ---Category: Inquire methods    
-        
-        
+        ---Category: Inquire methods
+
+        ShaderProgram ( me )
+        returns ShaderProgram_Handle from Graphic3d;
+        ---C++: return const &
+
 --
 
 fields
@@ -290,4 +301,6 @@ fields
         MyPolygonOffsetFactor   :       ShortReal from Standard;
         MyPolygonOffsetUnits    :       ShortReal from Standard;
 
+        MyShaderProgram         :       ShaderProgram_Handle  from  Graphic3d;
+
 end AspectFillArea3d;

src/Graphic3d/Graphic3d_AspectFillArea3d.cxx

@@ -180,3 +180,13 @@ void Graphic3d_AspectFillArea3d::PolygonOffsets(Standard_Integer&    aMode,
   aFactor = MyPolygonOffsetFactor;
   aUnits  = MyPolygonOffsetUnits;
 }
+
+void Graphic3d_AspectFillArea3d::SetShaderProgram (const Handle(Graphic3d_ShaderProgram)& theProgram)
+{
+  MyShaderProgram = theProgram;
+}
+
+const Handle(Graphic3d_ShaderProgram)& Graphic3d_AspectFillArea3d::ShaderProgram() const
+{
+  return MyShaderProgram;
+}

src/Graphic3d/Graphic3d_AspectLine3d.cdl

@@ -29,9 +29,9 @@ class AspectLine3d from Graphic3d inherits AspectLine from Aspect
 
 uses
 
-	Color		from Quantity,
-
-	TypeOfLine	from Aspect
+	Color                 from Quantity,
+	TypeOfLine            from Aspect,
+	ShaderProgram_Handle  from Graphic3d
 
 is
 
@@ -58,9 +58,16 @@ is
 	--	    factor to this nominal line width.
 	--	    The supported linewidths vary by 1-pixel units.
 
---
+  SetShaderProgram ( me  :  mutable; 
+                     theProgram  :  ShaderProgram_Handle from Graphic3d );
+  ---Level: Public
+  ---Purpose: Sets up OpenGL/GLSL shader program.
 
--- fields
+  ShaderProgram ( me )
+  returns ShaderProgram_Handle from Graphic3d;
+  ---C++: return const &
+
+fields
 
 --
 -- Class	:	Graphic3d_AspectLine3d
@@ -75,4 +82,6 @@ is
 --			defined by AspectLine.
 --
 
+  MyShaderProgram  :  ShaderProgram_Handle  from  Graphic3d; 
+
 end AspectLine3d;

src/Graphic3d/Graphic3d_AspectLine3d.cxx

@@ -58,3 +58,13 @@ Graphic3d_AspectLine3d::Graphic3d_AspectLine3d () {
 // initialisation of AspectLine with AColor, AType, AWidth.
 
 Graphic3d_AspectLine3d::Graphic3d_AspectLine3d (const Quantity_Color& AColor, const Aspect_TypeOfLine AType, const Standard_Real AWidth):Aspect_AspectLine (AColor, AType, AWidth) {}
+
+void Graphic3d_AspectLine3d::SetShaderProgram (const Handle(Graphic3d_ShaderProgram)& theProgram)
+{
+  MyShaderProgram = theProgram;
+}
+
+const Handle(Graphic3d_ShaderProgram)& Graphic3d_AspectLine3d::ShaderProgram() const
+{
+  return MyShaderProgram;
+}

src/Graphic3d/Graphic3d_AspectMarker3d.cdl

@@ -32,11 +32,12 @@ class AspectMarker3d from Graphic3d inherits AspectMarker from Aspect
 
 uses
 
-  Color                from Quantity,
-  TypeOfMarker         from Aspect,
-  HArray1OfByte        from TColStd,
-  PixMap_Handle        from Image,
-  MarkerImage_Handle   from Graphic3d
+  Color                 from Quantity,
+  TypeOfMarker          from Aspect,
+  HArray1OfByte         from TColStd,
+  PixMap_Handle         from Image,
+  MarkerImage_Handle    from Graphic3d,
+  ShaderProgram_Handle  from Graphic3d
 
 is
 
@@ -89,6 +90,15 @@ is
              theHeight : Integer from Standard;
              theTexture: HArray1OfByte from TColStd ) is static;
 
+  SetShaderProgram ( me  :  mutable; 
+                     theProgram  :  ShaderProgram_Handle from Graphic3d );
+  ---Level: Public
+  ---Purpose: Sets up OpenGL/GLSL shader program.
+
+  ShaderProgram ( me )
+  returns ShaderProgram_Handle from Graphic3d;
+  ---C++: return const &
+
 fields
 
 --
@@ -105,4 +115,6 @@ fields
 
 myMarkerImage : MarkerImage_Handle from Graphic3d is protected;
 
+MyShaderProgram  :  ShaderProgram_Handle  from  Graphic3d; 
+
 end AspectMarker3d;

src/Graphic3d/Graphic3d_AspectMarker3d.cxx

@@ -99,3 +99,21 @@ void Graphic3d_AspectMarker3d::SetBitMap (const Standard_Integer theWidth,
   myMarkerImage.Nullify();
   myMarkerImage = new Graphic3d_MarkerImage (theTextureBitMap, theWidth, theHeight);
 }
+
+// =======================================================================
+// function : SetShaderProgram
+// purpose  :
+// =======================================================================
+void Graphic3d_AspectMarker3d::SetShaderProgram (const Handle(Graphic3d_ShaderProgram)& theProgram)
+{
+  MyShaderProgram = theProgram;
+}
+
+// =======================================================================
+// function : ShaderProgram
+// purpose  :
+// =======================================================================
+const Handle(Graphic3d_ShaderProgram)& Graphic3d_AspectMarker3d::ShaderProgram() const
+{
+  return MyShaderProgram;
+}

src/Graphic3d/Graphic3d_AspectText3d.cdl

@@ -36,11 +36,12 @@ class AspectText3d from Graphic3d inherits TShared
     
 uses
 
-    Color             from Quantity,
-    TypeOfStyleText   from Aspect,
-    TypeOfDisplayText from Aspect,
-    AsciiString       from TCollection,
-    FontAspect        from Font 
+    Color                 from Quantity,
+    TypeOfStyleText       from Aspect,
+    TypeOfDisplayText     from Aspect,
+    AsciiString           from TCollection,
+    FontAspect            from Font,
+    ShaderProgram_Handle  from Graphic3d
 
 raises
 
@@ -178,11 +179,10 @@ is
     ---Level: Public 
     ---Purpose: Returns text FontAspect
 
-
-
-
-
-
+    SetShaderProgram ( me  :  mutable; 
+                       theProgram  :  ShaderProgram_Handle from Graphic3d );
+    ---Level: Public
+    ---Purpose: Sets up OpenGL/GLSL shader program.
 
     ----------------------------
     -- Category: Inquire methods
@@ -245,7 +245,11 @@ is
     ---Purpose: Returns the current values of the group <me>.
     ---Category: Inquire methods
 
---
+    ShaderProgram ( me )
+    returns ShaderProgram_Handle from Graphic3d;
+    ---C++: return const &
+
+--
 
 fields
 
@@ -292,4 +296,6 @@ fields
     -- the variable turning FontAspect of the text
     MyTextFontAspect :  FontAspect from Font;
 
+    MyShaderProgram  :  ShaderProgram_Handle  from  Graphic3d; 
+
 end AspectText3d;

src/Graphic3d/Graphic3d_AspectText3d.cxx

@@ -253,5 +253,12 @@ void Graphic3d_AspectText3d::Values ( Quantity_Color& AColor,
 
 }
 
+void Graphic3d_AspectText3d::SetShaderProgram (const Handle(Graphic3d_ShaderProgram)& theProgram)
+{
+  MyShaderProgram = theProgram;
+}
 
-
+const Handle(Graphic3d_ShaderProgram)& Graphic3d_AspectText3d::ShaderProgram() const
+{
+  return MyShaderProgram;
+}

src/Graphic3d/Graphic3d_CGroup.hxx

@@ -23,6 +23,7 @@
 #include <InterfaceGraphic_Visual3d.hxx>
 #include <Graphic3d_CTexture.hxx>
 #include <Graphic3d_MarkerImage_Handle.hxx>
+#include <Graphic3d_ShaderProgram_Handle.hxx>
 
 class Graphic3d_CStructure;
 
@@ -80,6 +81,8 @@ public:
   float PolygonOffsetFactor;
   float PolygonOffsetUnits;
 
+  Handle(Graphic3d_ShaderProgram) ShaderProgram;
+
 };
 
 class CALL_DEF_CONTEXTMARKER
@@ -104,6 +107,7 @@ public:
   Aspect_TypeOfMarker MarkerType;
   Standard_ShortReal Scale;
   Handle(Graphic3d_MarkerImage) MarkerImage;
+  Handle(Graphic3d_ShaderProgram) ShaderProgram;
 
 };
 

src/Graphic3d/Graphic3d_Group_8.cxx

@@ -46,6 +46,7 @@
 #include <Graphic3d_Group.jxx>
 #include <Graphic3d_Group.pxx>
 #include <Graphic3d_TextureMap.hxx>
+#include <Graphic3d_ShaderProgram.hxx>
 
 //-Methods, in order
 
@@ -68,13 +69,14 @@ void Graphic3d_Group::SetGroupPrimitivesAspect (const Handle(Graphic3d_AspectLin
   MyCGroup.ContextLine.Width      = float (AWidth);
   MyCGroup.ContextLine.IsDef      = 1;
 
+  MyCGroup.ContextLine.ShaderProgram = CTX->ShaderProgram();
+
   int noinsert    = 1;
   MyGraphicDriver->LineContextGroup (MyCGroup, noinsert);
 
   MyCGroup.ContextLine.IsSet      = 1;
 
   Update ();
-
 }
 
 void Graphic3d_Group::SetGroupPrimitivesAspect (const Handle(Graphic3d_AspectFillArea3d)& CTX) {
@@ -277,13 +279,14 @@ void Graphic3d_Group::SetGroupPrimitivesAspect (const Handle(Graphic3d_AspectFil
   MyCGroup.ContextFillArea.PolygonOffsetUnits  = aPolyUnits;
   // OCC4895 SAN 22/03/04 High-level interface for controlling polygon offsets
 
+  MyCGroup.ContextFillArea.ShaderProgram = CTX->ShaderProgram();
+
   int noinsert = 1;
   MyGraphicDriver->FaceContextGroup (MyCGroup, noinsert);
 
   MyCGroup.ContextFillArea.IsSet  = 1;
 
-  Update ();
-
+  Update();
 }
 
 void Graphic3d_Group::SetGroupPrimitivesAspect (const Handle(Graphic3d_AspectMarker3d)& theCtx)
@@ -306,6 +309,8 @@ void Graphic3d_Group::SetGroupPrimitivesAspect (const Handle(Graphic3d_AspectMar
   MyCGroup.ContextMarker.Scale       = Standard_ShortReal (aScale);
   MyCGroup.ContextMarker.MarkerImage = theCtx->GetMarkerImage();
 
+  MyCGroup.ContextMarker.ShaderProgram = theCtx->ShaderProgram();
+
   int noinsert = 1;
   MyGraphicDriver->MarkerContextGroup (MyCGroup, noinsert);
 
@@ -350,6 +355,8 @@ void Graphic3d_Group::SetGroupPrimitivesAspect (const Handle(Graphic3d_AspectTex
   MyCGroup.ContextText.TextAngle    = float (ATextAngle);
   MyCGroup.ContextText.TextFontAspect   = (int)ATextFontAspect;
 
+  MyCGroup.ContextText.ShaderProgram = CTX->ShaderProgram();
+
   MyCGroup.ContextText.IsDef      = 1;
 
   int noinsert    = 1;
@@ -358,7 +365,6 @@ void Graphic3d_Group::SetGroupPrimitivesAspect (const Handle(Graphic3d_AspectTex
   MyCGroup.ContextText.IsSet              = 1;
 
   Update ();
-
 }
 
 void Graphic3d_Group::SetPrimitivesAspect (const Handle(Graphic3d_AspectLine3d)& CTX) {
@@ -380,13 +386,14 @@ void Graphic3d_Group::SetPrimitivesAspect (const Handle(Graphic3d_AspectLine3d)&
   MyCGroup.ContextLine.Width              = float (AWidth);
   MyCGroup.ContextLine.IsDef              = 1;
 
+  MyCGroup.ContextLine.ShaderProgram = CTX->ShaderProgram();
+
   int noinsert    = 0;
   MyGraphicDriver->LineContextGroup (MyCGroup, noinsert);
 
   MyCGroup.ContextLine.IsSet              = 1;
 
   Update ();
-
 }
 
 void Graphic3d_Group::SetPrimitivesAspect (const Handle(Graphic3d_AspectFillArea3d)& CTX) {
@@ -584,13 +591,14 @@ void Graphic3d_Group::SetPrimitivesAspect (const Handle(Graphic3d_AspectFillArea
   MyCGroup.ContextFillArea.PolygonOffsetUnits  = (Standard_ShortReal)aPolyUnits;
   // OCC4895 SAN 22/03/04 High-level interface for controlling polygon offsets
 
+  MyCGroup.ContextFillArea.ShaderProgram = CTX->ShaderProgram();
+
   int noinsert    = 0;
   MyGraphicDriver->FaceContextGroup (MyCGroup, noinsert);
 
   MyCGroup.ContextFillArea.IsSet  = 1;
 
   Update ();
-
 }
 
 void Graphic3d_Group::SetPrimitivesAspect (const Handle(Graphic3d_AspectMarker3d)& thCtx)
@@ -613,6 +621,8 @@ void Graphic3d_Group::SetPrimitivesAspect (const Handle(Graphic3d_AspectMarker3d
   MyCGroup.ContextMarker.Scale       = Standard_ShortReal (aScale);
   MyCGroup.ContextMarker.MarkerImage = thCtx->GetMarkerImage();
 
+  MyCGroup.ContextMarker.ShaderProgram = thCtx->ShaderProgram();
+
   int noinsert = 0;
   MyGraphicDriver->MarkerContextGroup (MyCGroup, noinsert);
 
@@ -658,13 +668,14 @@ void Graphic3d_Group::SetPrimitivesAspect (const Handle(Graphic3d_AspectText3d)&
   MyCGroup.ContextText.TextFontAspect   = (int)ATextFontAspect;
   MyCGroup.ContextText.IsDef              = 1;
 
+  MyCGroup.ContextText.ShaderProgram = CTX->ShaderProgram();
+
   int noinsert    = 0;
   MyGraphicDriver->TextContextGroup (MyCGroup, noinsert);
 
   MyCGroup.ContextText.IsSet              = 1;
 
-  Update ();
-
+  Update();
 }
 
 Standard_Boolean Graphic3d_Group::IsGroupPrimitivesAspectSet (const Graphic3d_GroupAspect theAspect) const {

src/Graphic3d/Graphic3d_ShaderObject.cxx

@@ -0,0 +1,96 @@
+// Created on: 2013-09-20
+// Created by: Denis BOGOLEPOV
+// Copyright (c) 2013 OPEN CASCADE SAS
+//
+// The content of this file is subject to the Open CASCADE Technology Public
+// License Version 6.5 (the "License"). You may not use the content of this file
+// except in compliance with the License. Please obtain a copy of the License
+// at http://www.opencascade.org and read it completely before using this file.
+//
+// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
+// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
+//
+// The Original Code and all software distributed under the License is
+// distributed on an "AS IS" basis, without warranty of any kind, and the
+// Initial Developer hereby disclaims all such warranties, including without
+// limitation, any warranties of merchantability, fitness for a particular
+// purpose or non-infringement. Please see the License for the specific terms
+// and conditions governing the rights and limitations under the License.
+
+#include <OSD_File.hxx>
+#include <OSD_Protection.hxx>
+#include <Standard_Atomic.hxx>
+#include <Graphic3d_ShaderObject.hxx>
+#include <Graphic3d_GraphicDriver.hxx>
+
+namespace
+{
+  static volatile Standard_Integer THE_SHADER_OBJECT_COUNTER = 0;
+};
+
+IMPLEMENT_STANDARD_HANDLE (Graphic3d_ShaderObject, Standard_Transient)
+IMPLEMENT_STANDARD_RTTIEXT(Graphic3d_ShaderObject, Standard_Transient)
+
+// =======================================================================
+// function : Graphic3d_ShaderObject
+// purpose  : Creates a shader object from specified file
+// =======================================================================
+Graphic3d_ShaderObject::Graphic3d_ShaderObject (const Graphic3d_TypeOfShaderObject theType)
+: myType (theType)
+{
+  myID = TCollection_AsciiString ("Graphic3d_ShaderObject_")
+       + TCollection_AsciiString (Standard_Atomic_Increment (&THE_SHADER_OBJECT_COUNTER));
+}
+
+// =======================================================================
+// function : CreatFromFile
+// purpose  : Creates new shader object from specified file
+// =======================================================================
+Handle(Graphic3d_ShaderObject) Graphic3d_ShaderObject::CreateFromFile (const Graphic3d_TypeOfShaderObject theType,
+                                                                       const TCollection_AsciiString&     thePath)
+{
+  Handle(Graphic3d_ShaderObject) aShader = new Graphic3d_ShaderObject (theType);
+  aShader->myPath = thePath;
+
+  OSD_File aFile (thePath);
+  if (!aFile.Exists())
+  {
+    return NULL;
+  }
+
+  aFile.Open (OSD_ReadOnly, OSD_Protection());
+  aFile.Read (aShader->mySource, aFile.Size());
+  aFile.Close();
+
+  return aShader;
+}
+
+// =======================================================================
+// function : CreatFromSource
+// purpose  : Creates new shader object from specified source
+// =======================================================================
+Handle(Graphic3d_ShaderObject) Graphic3d_ShaderObject::CreateFromSource (const Graphic3d_TypeOfShaderObject theType,
+                                                                         const TCollection_AsciiString&     theSource)
+{
+  Handle(Graphic3d_ShaderObject) aShader = new Graphic3d_ShaderObject (theType);
+  aShader->mySource = theSource;
+  return aShader;
+}
+
+// =======================================================================
+// function : ~Graphic3d_ShaderObject
+// purpose  : Releases resources of shader object
+// =======================================================================
+Graphic3d_ShaderObject::~Graphic3d_ShaderObject()
+{
+  //
+}
+
+// =======================================================================
+// function : IsDone
+// purpose  : Checks if the shader object is valid or not
+// =======================================================================
+Standard_Boolean Graphic3d_ShaderObject::IsDone() const
+{
+  return !mySource.IsEmpty();
+}

src/Graphic3d/Graphic3d_ShaderObject.hxx

@@ -0,0 +1,80 @@
+// Created on: 2013-09-20
+// Created by: Denis BOGOLEPOV
+// Copyright (c) 2013 OPEN CASCADE SAS
+//
+// The content of this file is subject to the Open CASCADE Technology Public
+// License Version 6.5 (the "License"). You may not use the content of this file
+// except in compliance with the License. Please obtain a copy of the License
+// at http://www.opencascade.org and read it completely before using this file.
+//
+// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
+// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
+//
+// The Original Code and all software distributed under the License is
+// distributed on an "AS IS" basis, without warranty of any kind, and the
+// Initial Developer hereby disclaims all such warranties, including without
+// limitation, any warranties of merchantability, fitness for a particular
+// purpose or non-infringement. Please see the License for the specific terms
+// and conditions governing the rights and limitations under the License.
+
+#ifndef _Graphic3d_ShaderObject_HeaderFile
+#define _Graphic3d_ShaderObject_HeaderFile
+
+#include <OSD_Path.hxx>
+
+#include <Graphic3d_TypeOfShaderObject.hxx>
+#include <Graphic3d_ShaderObject_Handle.hxx>
+
+//! This class is responsible for managing shader objects.
+class Graphic3d_ShaderObject : public Standard_Transient
+{
+private:
+
+  //! Creates new shader object of specified type.
+  Standard_EXPORT Graphic3d_ShaderObject (const Graphic3d_TypeOfShaderObject theType);
+
+public:
+
+  //! Releases resources of shader object. 
+  Standard_EXPORT virtual ~Graphic3d_ShaderObject();
+  
+  //! Checks if the shader object is valid or not.
+  Standard_EXPORT virtual Standard_Boolean IsDone() const;
+  
+  //! Returns the full path to the shader source.
+  const OSD_Path& Path() const { return myPath; }
+
+  //! Returns the source code of the shader object.
+  const TCollection_AsciiString& Source() const { return mySource; }
+
+  //! Returns type of the shader object.
+  Graphic3d_TypeOfShaderObject Type() const { return myType; }
+  
+  //! Returns unique ID used to manage resource in graphic driver.
+  const TCollection_AsciiString& GetId() const { return myID; }
+
+  //! Creates new shader object from specified file.
+  Standard_EXPORT static Handle(Graphic3d_ShaderObject) CreateFromFile (const Graphic3d_TypeOfShaderObject theType,
+                                                                        const TCollection_AsciiString&     thePath);
+
+  //! Creates new shader object from specified source.
+  Standard_EXPORT static Handle(Graphic3d_ShaderObject) CreateFromSource (const Graphic3d_TypeOfShaderObject theType,
+                                                                          const TCollection_AsciiString&     theSource);
+
+public:
+
+  DEFINE_STANDARD_RTTI (Graphic3d_ShaderObject)
+
+protected:
+
+  TCollection_AsciiString myID;     //!< the ID of shader object
+  TCollection_AsciiString mySource; //!< the source code of shader object
+  OSD_Path                myPath;   //!< the path to shader source (may be empty)
+
+private:
+  
+  //! The type of shader object.
+  Graphic3d_TypeOfShaderObject myType;
+};
+
+#endif

src/Graphic3d/Graphic3d_ShaderObject_Handle.hxx

@@ -0,0 +1,30 @@
+// Created on: 2013-09-20
+// Created by: Denis BOGOLEPOV
+// Copyright (c) 2013 OPEN CASCADE SAS
+//
+// The content of this file is subject to the Open CASCADE Technology Public
+// License Version 6.5 (the "License"). You may not use the content of this file
+// except in compliance with the License. Please obtain a copy of the License
+// at http://www.opencascade.org and read it completely before using this file.
+//
+// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
+// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
+//
+// The Original Code and all software distributed under the License is
+// distributed on an "AS IS" basis, without warranty of any kind, and the
+// Initial Developer hereby disclaims all such warranties, including without
+// limitation, any warranties of merchantability, fitness for a particular
+// purpose or non-infringement. Please see the License for the specific terms
+// and conditions governing the rights and limitations under the License.
+
+#ifndef _Handle_Graphic3d_ShaderObject_HeaderFile
+#define _Handle_Graphic3d_ShaderObject_HeaderFile
+
+#include <Standard_Transient.hxx>
+
+class Graphic3d_ShaderObject;
+DEFINE_STANDARD_HANDLE (Graphic3d_ShaderObject, Standard_Transient)
+
+typedef Handle(Graphic3d_ShaderObject) Graphic3d_ShaderObject_Handle;
+
+#endif

src/Graphic3d/Graphic3d_ShaderProgram.cxx

@@ -0,0 +1,132 @@
+// Created on: 2013-09-20
+// Created by: Denis BOGOLEPOV
+// Copyright (c) 2013 OPEN CASCADE SAS
+//
+// The content of this file is subject to the Open CASCADE Technology Public
+// License Version 6.5 (the "License"). You may not use the content of this file
+// except in compliance with the License. Please obtain a copy of the License
+// at http://www.opencascade.org and read it completely before using this file.
+//
+// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
+// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
+//
+// The Original Code and all software distributed under the License is
+// distributed on an "AS IS" basis, without warranty of any kind, and the
+// Initial Developer hereby disclaims all such warranties, including without
+// limitation, any warranties of merchantability, fitness for a particular
+// purpose or non-infringement. Please see the License for the specific terms
+// and conditions governing the rights and limitations under the License.
+
+#include <Standard_Atomic.hxx>
+#include <Standard_Assert.hxx>
+
+#include <Graphic3d_GraphicDriver.hxx>
+#include <Graphic3d_ShaderObject.hxx>
+#include <Graphic3d_ShaderProgram.hxx>
+
+namespace
+{
+  static volatile Standard_Integer THE_PROGRAM_OBJECT_COUNTER = 0;
+};
+
+IMPLEMENT_STANDARD_HANDLE (Graphic3d_ShaderProgram, Standard_Transient)
+IMPLEMENT_STANDARD_RTTIEXT(Graphic3d_ShaderProgram, Standard_Transient)
+
+// =======================================================================
+// function : Graphic3d_ShaderProgram
+// purpose  : Creates new empty program object
+// =======================================================================
+Graphic3d_ShaderProgram::Graphic3d_ShaderProgram()
+{
+  myID = TCollection_AsciiString ("Graphic3d_ShaderProgram_")
+       + TCollection_AsciiString (Standard_Atomic_Increment (&THE_PROGRAM_OBJECT_COUNTER));
+}
+
+// =======================================================================
+// function : ~Graphic3d_ShaderProgram
+// purpose  : Releases resources of program object
+// =======================================================================
+Graphic3d_ShaderProgram::~Graphic3d_ShaderProgram()
+{
+  Destroy();
+}
+
+// =======================================================================
+// function : Destroy
+// purpose  : Releases resources of program object
+// =======================================================================
+void Graphic3d_ShaderProgram::Destroy() const
+{ }
+
+// =======================================================================
+// function : IsDone
+// purpose  : Checks if the program object is valid or not
+// =======================================================================
+Standard_Boolean Graphic3d_ShaderProgram::IsDone() const
+{
+  if (myShaderObjects.IsEmpty())
+  {
+    return Standard_False;
+  }
+
+  for (Graphic3d_ShaderObjectList::Iterator anIt (myShaderObjects); anIt.More(); anIt.Next())
+  {
+    if (!anIt.Value()->IsDone())
+      return Standard_False;
+  }
+
+  return Standard_True;
+}
+
+// =======================================================================
+// function : AttachShader
+// purpose  : Attaches shader object to the program object
+// =======================================================================
+Standard_Boolean Graphic3d_ShaderProgram::AttachShader (const Handle(Graphic3d_ShaderObject)& theShader)
+{
+  if (theShader.IsNull())
+  {
+    return Standard_False;
+  }
+
+  for (Graphic3d_ShaderObjectList::Iterator anIt (myShaderObjects); anIt.More(); anIt.Next())
+  {
+    if (anIt.Value() == theShader)
+      return Standard_False;
+  }
+
+  myShaderObjects.Append (theShader);
+  return Standard_True;
+}
+
+// =======================================================================
+// function : DetachShader
+// purpose  : Detaches shader object from the program object
+// =======================================================================
+Standard_Boolean Graphic3d_ShaderProgram::DetachShader (const Handle(Graphic3d_ShaderObject)& theShader)
+{
+  if (theShader.IsNull())
+  {
+    return Standard_False;
+  }
+
+  for (Graphic3d_ShaderObjectList::Iterator anIt (myShaderObjects); anIt.More(); anIt.Next())
+  {
+    if (anIt.Value() == theShader)
+    {
+      myShaderObjects.Remove (anIt);
+      return Standard_True;
+    }
+  }
+  
+  return Standard_False;
+}
+
+// =======================================================================
+// function : ClearVariables
+// purpose  : Removes all custom uniform variables from the program
+// =======================================================================
+void Graphic3d_ShaderProgram::ClearVariables()
+{
+  myVariables.Clear();
+}

src/Graphic3d/Graphic3d_ShaderProgram.hxx

@@ -0,0 +1,104 @@
+// Created on: 2013-09-20
+// Created by: Denis BOGOLEPOV
+// Copyright (c) 2013 OPEN CASCADE SAS
+//
+// The content of this file is subject to the Open CASCADE Technology Public
+// License Version 6.5 (the "License"). You may not use the content of this file
+// except in compliance with the License. Please obtain a copy of the License
+// at http://www.opencascade.org and read it completely before using this file.
+//
+// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
+// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
+//
+// The Original Code and all software distributed under the License is
+// distributed on an "AS IS" basis, without warranty of any kind, and the
+// Initial Developer hereby disclaims all such warranties, including without
+// limitation, any warranties of merchantability, fitness for a particular
+// purpose or non-infringement. Please see the License for the specific terms
+// and conditions governing the rights and limitations under the License.
+
+#ifndef _Graphic3d_ShaderProgram_HeaderFile
+#define _Graphic3d_ShaderProgram_HeaderFile
+
+#include <Graphic3d_ShaderObject_Handle.hxx>
+#include <Graphic3d_ShaderProgram_Handle.hxx>
+#include <Graphic3d_ShaderVariable.hxx>
+#include <NCollection_Sequence.hxx>
+
+//! List of shader objects.
+typedef NCollection_Sequence<Handle(Graphic3d_ShaderObject)> Graphic3d_ShaderObjectList;
+
+//! List of custom uniform shader variables.
+typedef NCollection_Sequence<Handle(Graphic3d_ShaderVariable)> Graphic3d_ShaderVariableList;
+
+//! This class is responsible for managing shader programs.
+class Graphic3d_ShaderProgram : public Standard_Transient
+{
+public:
+
+  //! Creates new empty program object.
+  Standard_EXPORT Graphic3d_ShaderProgram();
+
+  //! Releases resources of program object.
+  Standard_EXPORT virtual ~Graphic3d_ShaderProgram();
+
+  //! Releases resources of program object.
+  Standard_EXPORT void Destroy() const;
+
+  //! Checks if the program object is valid or not.
+  Standard_EXPORT virtual Standard_Boolean IsDone() const;
+
+  //! Returns unique ID used to manage resource in graphic driver.
+  const TCollection_AsciiString& GetId() const { return myID; }
+
+  //! Attaches shader object to the program object.
+  Standard_EXPORT Standard_Boolean AttachShader (const Handle(Graphic3d_ShaderObject)& theShader);
+
+  //! Detaches shader object from the program object.
+  Standard_EXPORT Standard_Boolean DetachShader (const Handle(Graphic3d_ShaderObject)& theShader);
+
+  //! Returns list of attached shader objects.
+  const Graphic3d_ShaderObjectList& ShaderObjects() const { return myShaderObjects; }
+
+  //! Returns list of custom uniform variables.
+  const Graphic3d_ShaderVariableList& Variables() const { return myVariables; }
+
+  //! Pushes custom uniform variable to the program.
+  template<class T>
+  Standard_Boolean PushVariable (const TCollection_AsciiString& theName,
+                                 const T&                       theValue);
+
+  //! Removes all custom uniform variables from the program.
+  Standard_EXPORT void ClearVariables();
+
+public:
+
+  DEFINE_STANDARD_RTTI (Graphic3d_ShaderProgram)
+
+private:
+
+  TCollection_AsciiString      myID;            //!< The unique identifier of program object.
+  Graphic3d_ShaderObjectList   myShaderObjects; //!< the list of attached shader objects.
+  Graphic3d_ShaderVariableList myVariables;     //!< the list of custom uniform variables.
+
+};
+
+// =======================================================================
+// function : PushVariable
+// purpose  : Pushes custom uniform variable to the program
+// =======================================================================
+template<class T> inline
+Standard_Boolean Graphic3d_ShaderProgram::PushVariable (const TCollection_AsciiString& theName,
+                                                        const T& theValue)
+{
+  Handle(Graphic3d_ShaderVariable) aVariable = Graphic3d_ShaderVariable::Create (theName, theValue);
+  if (aVariable.IsNull() || !aVariable->IsDone())
+  {
+    return Standard_False;
+  }
+
+  myVariables.Append (aVariable);
+  return Standard_True;
+}
+
+#endif

src/Graphic3d/Graphic3d_ShaderProgram_Handle.hxx

@@ -0,0 +1,30 @@
+// Created on: 2013-09-20
+// Created by: Denis BOGOLEPOV
+// Copyright (c) 2013 OPEN CASCADE SAS
+//
+// The content of this file is subject to the Open CASCADE Technology Public
+// License Version 6.5 (the "License"). You may not use the content of this file
+// except in compliance with the License. Please obtain a copy of the License
+// at http://www.opencascade.org and read it completely before using this file.
+//
+// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
+// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
+//
+// The Original Code and all software distributed under the License is
+// distributed on an "AS IS" basis, without warranty of any kind, and the
+// Initial Developer hereby disclaims all such warranties, including without
+// limitation, any warranties of merchantability, fitness for a particular
+// purpose or non-infringement. Please see the License for the specific terms
+// and conditions governing the rights and limitations under the License.
+
+#ifndef _Handle_Graphic3d_ShaderProgram_HeaderFile
+#define _Handle_Graphic3d_ShaderProgram_HeaderFile
+
+#include <Standard_Transient.hxx>
+
+class Graphic3d_ShaderProgram;
+DEFINE_STANDARD_HANDLE (Graphic3d_ShaderProgram, Standard_Transient)
+
+typedef Handle(Graphic3d_ShaderProgram) Graphic3d_ShaderProgram_Handle;
+
+#endif

src/Graphic3d/Graphic3d_ShaderVariable.cxx

@@ -0,0 +1,93 @@
+// Created on: 2013-09-25
+// Created by: Denis BOGOLEPOV
+// Copyright (c) 2013 OPEN CASCADE SAS
+//
+// The content of this file is subject to the Open CASCADE Technology Public
+// License Version 6.5 (the "License"). You may not use the content of this file
+// except in compliance with the License. Please obtain a copy of the License
+// at http://www.opencascade.org and read it completely before using this file.
+//
+// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
+// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
+//
+// The Original Code and all software distributed under the License is
+// distributed on an "AS IS" basis, without warranty of any kind, and the
+// Initial Developer hereby disclaims all such warranties, including without
+// limitation, any warranties of merchantability, fitness for a particular
+// purpose or non-infringement. Please see the License for the specific terms
+// and conditions governing the rights and limitations under the License.
+
+#include <Standard_Atomic.hxx>
+
+#include <Graphic3d_ShaderVariable.hxx>
+
+IMPLEMENT_STANDARD_HANDLE (Graphic3d_ShaderVariable, Standard_Transient)
+IMPLEMENT_STANDARD_RTTIEXT(Graphic3d_ShaderVariable, Standard_Transient)
+
+//
+// Specific instantiations of struct templates to avoid compilation warnings
+//
+template struct Graphic3d_UniformValue<int>;
+template struct Graphic3d_UniformValue<float>;
+template struct Graphic3d_UniformValue<OpenGl_Vec2>;
+template struct Graphic3d_UniformValue<OpenGl_Vec3>;
+template struct Graphic3d_UniformValue<OpenGl_Vec4>;
+template struct Graphic3d_UniformValue<OpenGl_Vec2i>;
+template struct Graphic3d_UniformValue<OpenGl_Vec3i>;
+template struct Graphic3d_UniformValue<OpenGl_Vec4i>;
+
+// =======================================================================
+// function : ~Graphic3d_ValueInterface
+// purpose  : Releases memory resources of variable value
+// =======================================================================
+Graphic3d_ValueInterface::~Graphic3d_ValueInterface()
+{
+  //
+}
+
+// =======================================================================
+// function : Graphic3d_ShaderVariable
+// purpose  : Creates new abstract shader variable
+// =======================================================================
+Graphic3d_ShaderVariable::Graphic3d_ShaderVariable (const TCollection_AsciiString& theName)
+: myName (theName),
+  myValue (NULL)
+{
+  //
+}
+
+// =======================================================================
+// function : ~Graphic3d_ShaderVariableBase
+// purpose  : Releases resources of shader variable
+// =======================================================================
+Graphic3d_ShaderVariable::~Graphic3d_ShaderVariable()
+{
+  delete myValue;
+}
+
+// =======================================================================
+// function : IsDone
+// purpose  : Checks if the shader variable is valid or not
+// =======================================================================
+Standard_Boolean Graphic3d_ShaderVariable::IsDone() const
+{
+  return !myName.IsEmpty() && (myValue != NULL);
+}
+
+// =======================================================================
+// function : Name
+// purpose  : Returns name of shader variable
+// =======================================================================
+const TCollection_AsciiString& Graphic3d_ShaderVariable::Name() const
+{
+  return myName;
+}
+
+// =======================================================================
+// function : Value
+// purpose  : Returns interface of shader variable value
+// =======================================================================
+Graphic3d_ValueInterface* Graphic3d_ShaderVariable::Value()
+{
+  return myValue;
+}

src/Graphic3d/Graphic3d_ShaderVariable.hxx

@@ -0,0 +1,171 @@
+// Created on: 2013-09-25
+// Created by: Denis BOGOLEPOV
+// Copyright (c) 2013 OPEN CASCADE SAS
+//
+// The content of this file is subject to the Open CASCADE Technology Public
+// License Version 6.5 (the "License"). You may not use the content of this file
+// except in compliance with the License. Please obtain a copy of the License
+// at http://www.opencascade.org and read it completely before using this file.
+//
+// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
+// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
+//
+// The Original Code and all software distributed under the License is
+// distributed on an "AS IS" basis, without warranty of any kind, and the
+// Initial Developer hereby disclaims all such warranties, including without
+// limitation, any warranties of merchantability, fitness for a particular
+// purpose or non-infringement. Please see the License for the specific terms
+// and conditions governing the rights and limitations under the License.
+
+#ifndef _Graphic3d_ShaderVariable_HeaderFile
+#define _Graphic3d_ShaderVariable_HeaderFile
+
+#include <OpenGl_Vec.hxx>
+#include <Standard_Transient.hxx>
+#include <TCollection_AsciiString.hxx>
+
+#include <Graphic3d_ShaderVariable_Handle.hxx>
+
+//! Interface for generic variable value.
+struct Graphic3d_ValueInterface
+{
+  //! Releases memory resources of variable value.
+  Standard_EXPORT virtual ~Graphic3d_ValueInterface();
+
+  //! Returns unique identifier of value type.
+  virtual Standard_Size TypeID() const = 0;
+
+  //! Returns variable value casted to specified type.
+  template <class T> T& As();
+
+  //! Returns variable value casted to specified type.
+  template <class T> const T& As() const;
+};
+
+//! Generates unique type identifier for variable value.
+template<class T>
+struct Graphic3d_UniformValueTypeID {
+  /* Not implemented */
+};
+
+template<>
+struct Graphic3d_UniformValueTypeID<int> {
+  static const Standard_Size ID = __LINE__;
+};
+
+template<>
+struct Graphic3d_UniformValueTypeID<float> {
+  static const Standard_Size ID = __LINE__;
+};
+
+template<>
+struct Graphic3d_UniformValueTypeID<OpenGl_Vec2> {
+  static const Standard_Size ID = __LINE__;
+};
+
+template<>
+struct Graphic3d_UniformValueTypeID<OpenGl_Vec3> {
+  static const Standard_Size ID = __LINE__;
+};
+
+template<>
+struct Graphic3d_UniformValueTypeID<OpenGl_Vec4> {
+  static const Standard_Size ID = __LINE__;
+};
+
+template<>
+struct Graphic3d_UniformValueTypeID<OpenGl_Vec2i> {
+  static const Standard_Size ID = __LINE__;
+};
+
+template<>
+struct Graphic3d_UniformValueTypeID<OpenGl_Vec3i> {
+  static const Standard_Size ID = __LINE__;
+};
+
+template<>
+struct Graphic3d_UniformValueTypeID<OpenGl_Vec4i> {
+  static const Standard_Size ID = __LINE__;
+};
+
+//! Describes specific value of custom uniform variable.
+template <class T>
+struct Graphic3d_UniformValue : public Graphic3d_ValueInterface
+{
+  //! Creates new variable value.
+  Graphic3d_UniformValue (const T& theValue) : Value (theValue) { }
+
+  //! Returns unique identifier of value type.
+  virtual Standard_Size TypeID() const;
+
+  //! Value of custom uniform variable.
+  T Value;
+};
+
+//! Integer uniform value.
+typedef Graphic3d_UniformValue<int> Graphic3d_UniformInt;
+
+//! Integer uniform 2D vector.
+typedef Graphic3d_UniformValue<OpenGl_Vec2i> Graphic3d_UniformVec2i;
+
+//! Integer uniform 3D vector.
+typedef Graphic3d_UniformValue<OpenGl_Vec3i> Graphic3d_UniformVec3i;
+
+//! Integer uniform 4D vector.
+typedef Graphic3d_UniformValue<OpenGl_Vec4i> Graphic3d_UniformVec4i;
+
+//! Floating-point uniform value.
+typedef Graphic3d_UniformValue<float> Graphic3d_UniformFloat;
+
+//! Floating-point uniform 2D vector.
+typedef Graphic3d_UniformValue<OpenGl_Vec2> Graphic3d_UniformVec2;
+
+//! Floating-point uniform 3D vector.
+typedef Graphic3d_UniformValue<OpenGl_Vec3> Graphic3d_UniformVec3;
+
+//! Floating-point uniform 4D vector.
+typedef Graphic3d_UniformValue<OpenGl_Vec4> Graphic3d_UniformVec4;
+
+//! Describes custom uniform shader variable.
+class Graphic3d_ShaderVariable : public Standard_Transient
+{
+public:
+
+  //! Releases resources of shader variable.
+  Standard_EXPORT virtual ~Graphic3d_ShaderVariable();
+  
+  //! Returns name of shader variable.
+  Standard_EXPORT const TCollection_AsciiString& Name() const;
+
+  //! Checks if the shader variable is valid or not.
+  Standard_EXPORT Standard_Boolean IsDone() const;
+
+  //! Returns interface of shader variable value.
+  Standard_EXPORT Graphic3d_ValueInterface* Value();
+
+  //! Creates new initialized shader variable.
+  template<class T>
+  static Graphic3d_ShaderVariable* Create (const TCollection_AsciiString& theName,
+                                           const T&                       theValue);
+
+public:
+
+  DEFINE_STANDARD_RTTI (Graphic3d_ShaderVariable)
+
+protected:
+
+  //! Creates new uninitialized shader variable.
+  Standard_EXPORT Graphic3d_ShaderVariable (const TCollection_AsciiString& theName);
+
+protected:
+
+  //! The name of uniform shader variable.
+  TCollection_AsciiString myName;
+
+  //! The generic value of shader variable.
+  Graphic3d_ValueInterface* myValue;
+};
+
+#include <Graphic3d_ShaderVariable.lxx>
+
+#endif // _Graphic3d_ShaderVariable_HeaderFile

src/Graphic3d/Graphic3d_ShaderVariable.lxx

@@ -0,0 +1,63 @@
+// Created on: 2013-09-25
+// Created by: Denis BOGOLEPOV
+// Copyright (c) 2013 OPEN CASCADE SAS
+//
+// The content of this file is subject to the Open CASCADE Technology Public
+// License Version 6.5 (the "License"). You may not use the content of this file
+// except in compliance with the License. Please obtain a copy of the License
+// at http://www.opencascade.org and read it completely before using this file.
+//
+// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
+// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
+//
+// The Original Code and all software distributed under the License is
+// distributed on an "AS IS" basis, without warranty of any kind, and the
+// Initial Developer hereby disclaims all such warranties, including without
+// limitation, any warranties of merchantability, fitness for a particular
+// purpose or non-infringement. Please see the License for the specific terms
+// and conditions governing the rights and limitations under the License.
+
+// =======================================================================
+// function : As
+// purpose  : Returns variable value casted to specified type
+// =======================================================================
+template <class T> inline
+T& Graphic3d_ValueInterface::As()
+{
+  Graphic3d_UniformValue<T>* aPtr = dynamic_cast<Graphic3d_UniformValue<T>*> (this);
+  return aPtr->Value;
+}
+
+// =======================================================================
+// function : As
+// purpose  : Returns variable value casted to specified type
+// =======================================================================
+template <class T> inline
+const T& Graphic3d_ValueInterface::As() const
+{
+  const Graphic3d_UniformValue<T>* aPtr = dynamic_cast<const Graphic3d_UniformValue<T>*> (this);
+  return aPtr->Value;
+}
+
+// =======================================================================
+// function : TypeID
+// purpose  : Returns unique identifier of value type
+// =======================================================================
+template <class T> inline
+Standard_Size Graphic3d_UniformValue<T>::TypeID() const
+{
+  return Graphic3d_UniformValueTypeID<T>::ID;
+}
+
+// =======================================================================
+// function : Create
+// purpose  : Creates initialized shader variable
+// =======================================================================
+template<class T> inline
+Graphic3d_ShaderVariable* Graphic3d_ShaderVariable::Create (const TCollection_AsciiString& theName,
+                                                            const T&                       theValue)
+{
+  Graphic3d_ShaderVariable* theVariable = new Graphic3d_ShaderVariable (theName);
+  theVariable->myValue = new Graphic3d_UniformValue<T> (theValue);
+  return theVariable;
+}

src/Graphic3d/Graphic3d_ShaderVariable_Handle.hxx

@@ -0,0 +1,28 @@
+// Created on: 2013-09-25
+// Created by: Denis BOGOLEPOV
+// Copyright (c) 2013 OPEN CASCADE SAS
+//
+// The content of this file is subject to the Open CASCADE Technology Public
+// License Version 6.5 (the "License"). You may not use the content of this file
+// except in compliance with the License. Please obtain a copy of the License
+// at http://www.opencascade.org and read it completely before using this file.
+//
+// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
+// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
+//
+// The Original Code and all software distributed under the License is
+// distributed on an "AS IS" basis, without warranty of any kind, and the
+// Initial Developer hereby disclaims all such warranties, including without
+// limitation, any warranties of merchantability, fitness for a particular
+// purpose or non-infringement. Please see the License for the specific terms
+// and conditions governing the rights and limitations under the License.
+
+#ifndef _Handle_Graphic3d_ShaderVariable_HeaderFile
+#define _Handle_Graphic3d_ShaderVariable_HeaderFile
+
+#include <Standard_Transient.hxx>
+
+class Graphic3d_ShaderVariable;
+DEFINE_STANDARD_HANDLE (Graphic3d_ShaderVariable, Standard_Transient)
+
+#endif

src/Graphic3d/Graphic3d_TypeOfShaderObject.hxx

@@ -0,0 +1,30 @@
+// Created on: 2013-09-20
+// Created by: Denis BOGOLEPOV
+// Copyright (c) 2013 OPEN CASCADE SAS
+//
+// The content of this file is subject to the Open CASCADE Technology Public
+// License Version 6.5 (the "License"). You may not use the content of this file
+// except in compliance with the License. Please obtain a copy of the License
+// at http://www.opencascade.org and read it completely before using this file.
+//
+// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
+// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
+//
+// The Original Code and all software distributed under the License is
+// distributed on an "AS IS" basis, without warranty of any kind, and the
+// Initial Developer hereby disclaims all such warranties, including without
+// limitation, any warranties of merchantability, fitness for a particular
+// purpose or non-infringement. Please see the License for the specific terms
+// and conditions governing the rights and limitations under the License.
+
+#ifndef _Graphic3d_TypeOfShaderObject_HeaderFile
+#define _Graphic3d_TypeOfShaderObject_HeaderFile
+
+//! Type of the shader object (may be extended).
+enum Graphic3d_TypeOfShaderObject
+{
+  Graphic3d_TOS_VERTEX,
+  Graphic3d_TOS_FRAGMENT
+};
+
+#endif